【作者】 许凌； 张亚东； 朱镇； 赵凌； 赵庆勇； 张巧凤； 王才林；

【Author】 XU Ling~(1,2) ZHANG Ya-dong~1 ZHU Zhen~1 ZHAO Ling~1 ZHAO Qing-yong~(1,2) ZHANG Qiao-feng~(1,2) WANG Cai-lin~1 1.Institute of Food Crops,Jiangsu Academy of Agricultural Sciences,Jiangsu High Quality Rice R&D Center,Nanjing 210014,China 2.College of Agriculture,Nanjing Agricultural university,Nanjing 210095,China

【机构】 江苏省农业科学院粮食作物研究所,江苏省优质水稻工程技术研究中心； 南京农业大学农学院；

【摘要】 利用热研2号和密阳23为亲本构建的含111个株系的 F₇重组自交系群体,对粒长、粒宽、粒厚、长宽比和千粒重5个性状进行 QTL 分析,共检测到分布于6条染色体上的14个 QTL。其中第2染色体上控制粒宽的 qGW2与控制千粒重的 qTGW2位于同一区域,片与控制粒厚的 qGT2位于相邻区域。这与相关性分析中粒重与粒宽的相关系数最大（0.631）,与粒厚的相关系数其次（0.487）的结果一致。更多还原

【Abstract】 Quantitative trait locus (QTLs) for grain weight and its component traits including grain length,grain width,grain thickness,length/width ratio and 1000-grain weight were mapped by using a set of 111 recombinant inbred line (RIL) population derived from Nikken 2 and Milyang 23 through successive selfing for 7 generations.A total of four- teen QTLs distributed on six chromosomes were detected.QTL mapping showed that on chromosome 2 grain width shared the same chromosome region with 1 000-grain weight,which closed to qGT2.This result was consistent with the result of correlation analysis in which grain weight was closely correlated with grain width (0.631),and then with grain thickness (0.487).更多还原